Tobacco material heating device and control method of tobacco material heating device

Abstract

The present invention relates to a tobacco material heating device and a control method thereof. The tobacco material heating device includes: a cylindrical member for circulating the tobacco material to be heated; a first air supply pipeline communicating with the feeding end of the cylindrical member so that the process hot air sent out by the first air supply pipeline flows from the feeding end to the discharging end of the cylindrical member; a second air supply pipeline communicating with the discharging end of the cylindrical member so that the process hot air sent out by the second air supply pipeline flows from the discharging end to the feeding end of the cylindrical member; and an electric heating member including a first electric heating member configured to heat the air in the first air supply pipeline to form process hot air and a second electric heating member configured to heat the air in the second air supply pipeline to form process hot air. By applying the technical solution of the present invention, the electric heating member is used to heat the air to form process hot air, which improves the problems existing in the related art such as long hot air temperature rise time and low temperature adjustment sensitivity.

Description

Technical Field

[0001] The present invention relates to the field of tobacco equipment, and more particularly, to a tobacco material heating device and a control method for the tobacco material heating device. Background Art

[0002] Roller-type equipment is a widely used equipment form in the tobacco industry and is commonly used in heat and mass transfer process such as tobacco material rewetting, feeding, drying, etc., such as a loose rewetting roller, a flavoring / feeding roller, a drum-type tobacco dryer, etc. Usually, these roller-type equipment are equipped with a hot air system. Under the action of process hot air that meets certain conditions, it promotes the combination or separation of the material in the drum and the process medium to achieve specific process purposes.

[0003] In the related art (see Figure 1 ), the hot air system of the roller-type equipment includes a heat exchanger 1', a process fan 2', a hot air duct 3', a temperature sensor 4', and an adjusting damper 5'. When the hot air system of the roller-type equipment starts to work, under the action of the process fan 2', the natural air at the equipment site enters the heat exchanger 1'. Under the closed-loop control of the temperature sensor 4', it is gradually heated to become process hot air that meets the process requirements and enters the inside of the drum 6' through the hot air duct 3' to contact the material, promoting the completion of the process task.

[0004] However, through research, it is found that the hot air system of the existing roller-type equipment has at least the following problems:

[0005] 1. The hot air has a long heating-up time. Since the heating of the hot air is achieved by steam heat exchange, when preparing to produce hot air and it needs to be heated up, the steam flow rate entering the heat exchanger must be increased first to heat up the heat exchanger and then heat the hot air. Moreover, the adjustment of the steam flow rate is relatively slow, resulting in a long hot air heating-up time;

[0006] 2. The hot air adjustment sensitivity is low. When it is necessary to adjust the hot air temperature during the process, the steam flow rate entering the heat exchanger must be increased or decreased accordingly. And due to the large thermal inertia of the heat exchanger, the hot air adjustment sensitivity is low;

[0007] 3. The pipeline is complex and the maintenance workload is large. The heat exchanger needs to be equipped with corresponding steam and condensate discharge pipelines and related valve parts, resulting in a relatively complex pipeline system of the equipment. Moreover, the heat exchange pipes of the steam pipeline are prone to perforation and leakage, with a short service life and requiring a lot of maintenance work; especially for some heat exchangers at high altitudes, there are also relatively large safety hazards in their maintenance work;

[0008] 4. The steam quality is uncontrollable. Since the steam pipeline at the workshop site is relatively long, it is very difficult to control indicators such as the steam dryness, flow rate, and pressure, resulting in fluctuations in the hot air temperature control, affecting the process quality of the product, and with low energy utilization rate.

[0009] It should be noted that the information disclosed in the background art section of the present invention is only intended to enhance the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0010] The present invention aims to provide a tobacco material heating device and a control method for the tobacco material heating device to improve problems such as long hot air heating-up time and low temperature regulation sensitivity in the related art.

[0011] According to one aspect of an embodiment of the present invention, there is provided a tobacco material heating device, which includes:

[0012] A cylindrical component for circulating the heated tobacco material;

[0013] A first air supply pipeline communicated with the feeding end of the cylindrical component, so that the process hot air sent out by the first air supply pipeline flows from the feeding end to the discharging end of the cylindrical component;

[0014] A second air supply pipeline communicated with the discharging end of the cylindrical component, so that the process hot air sent out by the second air supply pipeline flows from the discharging end to the feeding end of the cylindrical component; and

[0015] An electric heating component, including a first electric heating component configured to heat the air in the first air supply pipeline to form process hot air and a second electric heating component configured to heat the air in the second air supply pipeline to form process hot air.

[0016] In some embodiments,

[0017] The first electric heating component is an electromagnetic heating component; and / or

[0018] The second electric heating component is an electromagnetic heating component.

[0019] In some embodiments, the tobacco material heating device further includes:

[0020] A temperature detection component configured to detect the air heated by the electric heating component;

[0021] A controller communicatively connected to both the electric heating component and the temperature detection component to increase the current of the electric heating component when the temperature detected by the temperature detection component is less than a first preset value, and / or decrease the current of the electric heating component when the temperature detected by the temperature detection component is greater than a second preset value.

[0022] In some embodiments, the temperature detection component includes:

[0023] The first temperature detection component is provided on the first air supply pipeline and is located downstream of the first electric heating component along the air supply direction;

[0024] The second temperature detection component is provided on the second air supply pipeline and is located downstream of the second electric heating component along the air supply direction.

[0025] In some embodiments, both the first temperature detection component and the second temperature detection component are communicatively connected to the controller, and the controller is configured to control the current of the first electric heating component according to the temperature detected by the first temperature detection component and control the current of the second electric heating component according to the temperature detected by the second temperature detection component.

[0026] In some embodiments, the tobacco material heating device further includes:

[0027] The first flow control component is arranged in the first air supply pipeline to control the flow rate of the air in the first air supply pipeline; and / or

[0028] The second flow control component is arranged in the second air supply pipeline to control the flow rate of the air in the second air supply pipeline.

[0029] In some embodiments, the tobacco material heating device further includes a main air supply pipeline, and the inlets of the first air supply pipeline and the second air supply pipeline are both communicated with the outlet of the main air supply pipeline.

[0030] In some embodiments, the tobacco material heating device further includes a filter provided on the main air supply pipeline.

[0031] In some embodiments, the tobacco material heating device further includes a blower communicated with the main air supply pipeline, and the blower is a variable frequency speed regulation blower.

[0032] According to another aspect of the present invention, there is also provided a control method for the above-mentioned tobacco material heating device, and the control method includes:

[0033] The first working mode: opening the first air supply pipeline, closing the second air supply pipeline, and controlling the first electric heating component to heat the air flowing through the first air supply pipeline;

[0034] The second working mode: closing the first air supply pipeline, opening the second air supply pipeline, and controlling the second electric heating component to heat the air flowing through the second air supply pipeline; and

[0035] The third working mode: opening the first air supply pipeline and the second air supply pipeline, and controlling the first electric heating component to heat the air flowing through the first air supply pipeline and the second electric heating component to heat the air flowing through the second air supply pipeline.

[0036] According to another aspect of the present invention, there is also provided a control method for the above-mentioned tobacco material heating device, and the control method includes:

[0037] Detect the temperature of the air heated by the electric heating component. If the detected temperature is less than the first preset value, increase the current of the electric heating component. If the detected temperature is greater than the second preset value, decrease the current of the electric heating component.

[0038] Applying the technical solution of the present invention, using an electric heating component to heat air to form process hot air, compared with using steam in a heat exchanger to heat air in the related art, improves the problem of long hot air heating-up time existing in the related art.

[0039] Furthermore, the temperature of the electric heating component of the tobacco material heating device in this embodiment can be quickly adjusted by controlling its current, so it also improves the problem of low sensitivity of hot air temperature adjustment existing in the related art.

[0040] Furthermore, the tobacco material heating device in this embodiment uses an electric heating component to heat air to form process hot air, without setting up a steam pipeline and related valve parts connected to the heat exchanger. Therefore, it also improves the problems of complex pipeline and large maintenance workload existing in the related art.

[0041] Furthermore, the tobacco material heating device in this embodiment uses an electric heating component to directly heat the introduced air, so it improves the problem of uncontrollable steam quality existing in the related art.

[0042] Through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 Shows a schematic structural diagram of a tobacco material heating device in the related art;

[0045] Figure 2 Shows a schematic structural diagram of a tobacco material heating device according to an embodiment of the present invention; and

[0046] Figure 3 Shows a partial enlarged view of a tobacco material heating device according to an embodiment of the present invention.

[0047] In the figure:

[0048] 1', Heat exchanger; 2', Process fan; 3', Hot air duct; 4', Temperature sensor; 5', Damper; 6', Drum;

[0049] 1, Filter; 2, Fan; 3, Main air supply line; 31, First air supply line; 32, Second air supply line; 41, First flow control component; 42, Second flow control component; 51, First electric heating component; 52, Second electric heating component; 61, First temperature detection component; 62, Second temperature detection component; 7, Cylindrical component; 501, Electric heating component; 502, Thermal insulation material; 503, Controller. Detailed implementation manners

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Figure 2 The structural schematic diagram of the tobacco material heating device in this embodiment is shown; Figure 3 The partial enlarged view of the tobacco logistics heating device in this embodiment is shown; Combining Figure 2 and Figure 3 As shown, the tobacco material heating device in this embodiment includes a cylindrical component 7, a first air supply line 31, a second air supply line 32, and an electric heating component 501.

[0052] Among them, the cylindrical component 7 is used for the tobacco material to be heated to flow through. The first air supply line 31 is communicated with the feeding end of the cylindrical component 7, so that the process hot air sent out by the first air supply line 31 flows from the feeding end of the cylindrical component 7 to the discharging end. The second air supply line 32 is communicated with the discharging end of the cylindrical component 7, so that the process hot air sent out by the first air supply line 31 flows from the discharging end of the cylindrical component 7 to the feeding end.

[0053] The electric heating component 501 includes a first electric heating component 51 configured to heat the air in the first air supply line 31 to form process hot air and a second electric heating component 52 configured to heat the air in the second air supply line 32 to form process hot air.

[0054] In this embodiment, the electric heating component 501 is used to heat the air to form process hot air. Compared with heating the air with steam in a heat exchanger in the related art, the problem of long hot air heating-up time existing in the related art is improved.

[0055] Furthermore, the temperature of the electric heating component 501 of the tobacco material heating device in this embodiment can be quickly adjusted by controlling its current, thus also improving the problem of low sensitivity in adjusting the hot air temperature existing in the related art.

[0056] Furthermore, the tobacco material heating device in this embodiment uses the electric heating component 501 to heat air to form process hot air, without the need to provide a steam pipeline and related valve components connected to the heat exchanger. Therefore, it also improves the problems of complex pipeline and large maintenance workload existing in the related art.

[0057] Furthermore, the tobacco material heating device in this embodiment uses the electric heating component 501 to directly heat the introduced air, thus improving the problem of uncontrollable steam quality existing in the related art.

[0058] In some embodiments, the first electric heating component 51 is an electromagnetic heating component, and the second electric heating component 52 is an electromagnetic heating component.

[0059] The tobacco material heating device further includes a temperature detection component and a controller 503.

[0060] The temperature detection component is configured to detect the temperature of the air heated by the electric heating component. The controller 503 is communicatively connected to both the electric heating component 501 and the temperature detection component, so as to increase the current of the electric heating component 501 when the temperature detected by the temperature detection component is less than the first preset value, and / or decrease the current of the electric heating component 501 when the temperature detected by the temperature detection component is greater than the second preset value.

[0061] The temperature detection component includes a first temperature detection component 61 and a second temperature detection component 62. The first temperature detection component 61 is provided on the first air supply pipeline 31 and is located downstream of the first electric heating component 51 along the air supply direction. The second temperature detection component 62 is provided on the second air supply pipeline 32 and is located downstream of the second electric heating component 52 along the air supply direction.

[0062] Both the first temperature detection component 61 and the second temperature detection component 62 are communicatively connected to the controller 503. The controller 503 is configured to control the current of the first electric heating component 51 according to the temperature detected by the first temperature detection component 61 and control the current of the second electric heating component 52 according to the temperature detected by the second temperature detection component 62.

[0063] The tobacco material heating device further includes a first flow control component 41 and a second flow control component 42.

[0064] The first flow control component 41 is arranged in the first air supply pipeline 31 to control the air flow in the first air supply pipeline 31. In some embodiments, the first flow control component 41 is located upstream of the first electric heating component 51 along the hot air flow direction. The second flow control component 42 is arranged in the second air supply pipeline 32 to control the air flow in the second air supply pipeline 32. In some embodiments, the second flow control component 42 is located upstream of the second electric heating component 52 along the hot air flow direction.

[0065] When the first flow control component 41 is opened and the second flow control component 42 is closed, the first air supply pipeline 31 conveys hot air to the feeding end of the cylindrical component 7.

[0066] When the second flow control component 42 is opened and the first flow control component 41 is closed, the second air supply pipeline 32 conveys hot air to the discharging end of the cylindrical component 7.

[0067] When the first flow control component 41 and the second flow control component 42 are opened simultaneously, the first air supply pipeline 31 conveys hot air to the feeding end of the cylindrical component 7, and the second air supply pipeline 32 conveys hot air to the discharging end of the cylindrical component 7.

[0068] The tobacco material heating device further includes a main air supply pipeline 3, and the inlets of the first air supply pipeline 31 and the second air supply pipeline 32 are both communicated with the outlet of the main air supply pipeline 3.

[0069] The tobacco material heating device further includes a filter 1 arranged on the main air supply pipeline 3.

[0070] The tobacco material heating device further includes a fan 2 communicated with the main air supply pipeline 3. The fan 2 is a variable frequency speed regulation fan, and the variable frequency speed regulation fan can adjust the air volume. The variable frequency speed regulation fan and the flow control component can control the hot air volume conveyed into the cylindrical component 7.

[0071] In some embodiments, the inlets of the first air supply pipeline 31 and the second air supply pipeline 32 are arranged at the upper part of the cylindrical component 7 to achieve upward air inlet. The inlets of the first air supply pipeline 31 and the second air supply pipeline 32 can also be arranged at the lower part of the cylindrical component 7 to achieve downward air inlet.

[0072] As Figure 3 shown, the heat insulation material 502 is tightly coated on the installed hot air pipeline section, the electric heating component 501 is tightly wound on the outer surface of the heat insulation material 502, and both ends of the electric heating component 501 are connected to the controller 503.

[0073] According to another aspect of the present invention, a control method for a tobacco material heating device is further provided. The control method includes:

[0074] The first working mode: open the first air supply pipeline 31, close the second air supply pipeline 32, and control the first electric heating component 51 to heat the air flowing through the first air supply pipeline 31;

[0075] The second working mode: close the first air supply pipeline 31, open the second air supply pipeline 32, and control the second electric heating component 52 to heat the air flowing through the second air supply pipeline 32; and

[0076] The third working mode: open the first air supply pipeline 31 and the second air supply pipeline 32, and control the first electric heating component 51 to heat the air flowing through the first air supply pipeline 31 and the second electric heating component 52 to heat the air flowing through the second air supply pipeline 32.

[0077] Among them, the first working mode is the downstream mode. In the downstream mode, the first flow control component 41 is opened, the second flow control component 42 is closed. Under the action of the fan 2, the natural wind enters the first air supply pipeline 31 through the filter 1, and the first flow control component 41 adjusts it to obtain the hot air flow that meets the process requirements; when passing through the first electric heating component 51, the hot air flowing through is continuously heated by electromagnetic induction and becomes the process hot air that meets the process requirements under the closed-loop control of the first temperature detection component 61, and is injected into the feeding end of the cylindrical component 7. At this time, the process hot air and the material flow in the cylindrical component 7 are in the same direction.

[0078] The second working mode is the upstream mode. In the upstream mode, the second flow control component 42 is opened, the first flow control component 41 is closed. Under the action of the fan 2, the natural wind enters the second air supply pipeline 32 through the filter 1, and the second flow control component 42 adjusts it to obtain the hot air flow that meets the process requirements; when passing through the second electric heating component 52, the hot air flowing through is continuously heated by electromagnetic induction and becomes the process hot air that meets the process requirements under the closed-loop control of the second temperature detection component 62, and is injected into the discharging end of the cylindrical component 7. At this time, the process hot air and the material flow in the cylindrical component 7 are in the opposite direction.

[0079] The third working mode is the alternating mode. In the alternating mode, the first flow control component 41 and the second flow control component 42 are opened. Under the action of the fan 2, the natural wind enters the first air supply pipeline 31 and the second air supply pipeline 32 through the filter 1, and the first flow control component 41 and the second flow control component 42 respectively adjust them to obtain the hot air flows that meet the process requirements; when passing through the first electric heating component 51 and the second electric heating component 52, the hot air flowing through is continuously heated by electromagnetic induction and respectively becomes the process hot air that meets the process requirements under the closed-loop control of the first temperature detection component 61 and the second temperature detection component 62, and is respectively injected into the feeding end and the discharging end of the cylindrical component 7. At this time, the two process hot air flows interact with each other.

[0080] The control method of the tobacco material heating device further includes: detecting the temperature of the air heated by the electrically heated component 501, increasing the current of the electrically heated component 501 when the detected temperature is less than the first preset value, and decreasing the current of the electrically heated component 501 when the detected temperature is greater than the second preset value.

[0081] During temperature regulation, the first temperature detection component 61 and the second temperature detection component 62 respectively transmit the detected temperature signals to the electromagnetic controller 503. The electromagnetic controller 503 compares the received temperature signals with the set values and adjusts the current of the electromagnetic induction coil 501 in a timely manner according to the comparison results, so as to achieve their respective temperature regulation objectives respectively.

[0082] The above are only exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tobacco material heating device, characterized in that, Comprising: A cylindrical component (7) for circulating the heated tobacco material; A first air supply pipeline (31) communicating with the feeding end of the cylindrical component (7) so that the process hot air sent out by the first air supply pipeline (31) flows from the feeding end to the discharging end of the cylindrical component (7); A second air supply pipeline (32) communicating with the discharging end of the cylindrical component (7) so that the process hot air sent out by the second air supply pipeline (32) flows from the discharging end to the feeding end of the cylindrical component (7); And An electric heating component (501), including a first electric heating component (51) configured to heat the air in the first air supply pipeline (31) to form process hot air and a second electric heating component (52) configured to heat the air in the second air supply pipeline (32) to form process hot air, A first flow control component (41) provided in the first air supply pipeline (31) to control the flow rate of the air in the first air supply pipeline (31); A second flow control component (42) provided in the second air supply pipeline (32) to control the flow rate of the air in the second air supply pipeline (32), A temperature detection component configured to detect the air heated by the electric heating component; A controller (503) communicatively connected to both the electric heating component (501) and the temperature detection component to increase the current of the electric heating component (501) when the temperature detected by the temperature detection component is less than a first preset value, and / or to decrease the current of the electric heating component (501) when the temperature detected by the temperature detection component is greater than a second preset value, When the first flow control component (41) is opened and the second flow control component (42) is closed, the first air supply pipeline (31) conveys hot air to the feeding end of the cylindrical component (7), When the second flow control component (42) is opened and the first flow control component (41) is closed, the second air supply pipeline (32) conveys hot air to the discharging end of the cylindrical component (7), When the first flow control component (41) and the second flow control component (42) are opened simultaneously, the first air supply pipeline (31) conveys hot air to the feeding end of the cylindrical component (7), and the second air supply pipeline (32) conveys hot air to the discharging end of the cylindrical component (7), The temperature detection component includes: A first temperature detection component (61) provided on the first air supply pipeline (31) and located downstream of the first electric heating component (51) along the air supply direction; A second temperature detection component (62) provided on the second air supply pipeline (32) and located downstream of the second electric heating component (52) along the air supply direction, The first temperature detection component (61) and the second temperature detection component (62) respectively transmit the detected temperature signals to the controller (503), and the controller (503) compares the received temperature signals with the set values and adjusts the current of the electric heating component (501) in a timely manner according to the comparison results, so as to respectively achieve their respective temperature control objectives.

2. The tobacco material heating device according to claim 1, characterized in that, The first electric heating component (51) is an electromagnetic heating component; and / or The second electric heating component (52) is an electromagnetic heating component.

3. The tobacco material heating device according to claim 1, characterized in that, The first temperature detection component (61) and the second temperature detection component (62) are both communicatively connected to the controller (503), and the controller (503) is configured to control the current of the first electric heating component (51) according to the temperature detected by the first temperature detection component (61) and control the current of the second electric heating component (52) according to the temperature detected by the second temperature detection component (62).

4. The tobacco material heating device according to claim 1, characterized in that, It further includes a main air supply pipeline (3), and the inlets of the first air supply pipeline (31) and the second air supply pipeline (32) are both communicated with the outlet of the main air supply pipeline (3).

5. The tobacco material heating device according to claim 4, characterized in that, It further includes a filter (1) provided on the main air supply pipeline (3).

6. The tobacco material heating device according to claim 4, characterized in that, It further includes a fan (2) communicated with the main air supply pipeline (3), and the fan (2) is a variable frequency speed regulation fan.

7. A control method for the tobacco material heating device according to any one of claims 1 to 6, characterized in that, It includes: A first working mode, opening the first air supply pipeline (31), closing the second air supply pipeline (32), and controlling the first electric heating component (51) to heat the air flowing through the first air supply pipeline (31); A second working mode, closing the first air supply pipeline (31), opening the second air supply pipeline (32), and controlling the second electric heating component (52) to heat the air flowing through the second air supply pipeline (32); And A third working mode, opening the first air supply pipeline (31) and the second air supply pipeline (32), and controlling the first electric heating component (51) to heat the air flowing through the first air supply pipeline (31) and the second electric heating component (52) to heat the air flowing through the second air supply pipeline (32).

8. A control method for the tobacco material heating device according to any one of claims 1 to 6, characterized in that, It includes: Detect the temperature of the air heated by the electric heating component (501), increase the current of the electric heating component (501) if the detected temperature is less than a first preset value, and decrease the current of the electric heating component (501) if the detected temperature is greater than a second preset value.

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